Crank-pin sleeve



C. C. B-ETIENHAUSEN.

CRANK PI'N SLEEVE.

'APPLICATION man FEB. 20. 1922.

Patented June 6, 1922.

CHAR; 5 a EETTE/WAUSZ-W cam;

CHARLES o. ran'r'rnrnrlins nlv, or PRINCETON, NEBRASKA.

CRANK-BIN SLEEVE,

Specification of Letters Patent.

I Application filed February 20, 1922. Serial Nol 538,014.

fixedly applicable to a crankshaft, and

which are individually adapted to be journaled in a hearing as a peripheral part of the crankpin. It is the main ob ect of the invention to prevent th crankpin to which the sleeve is applied, from being worn by use, and especially to prevent the same from being worn unevenly, or flat on one side, in the associated connecting-rod bearing; to prolong thereby the life, or duration, of the crankpin, and thus of the crankshaft whereof that pin is part; to adapt the sleeve to be used for the repair of a worn crankshaft;

and to make such sleeves easily applicable M to a crankshaft in position, and easily removable therefrom. from time to time, as

often as renewal may be necessary. accomplish these results I incorporate in my improved crankpin sleeve 2, split tube which is adapted to be secured nonrotatahly on the crankshaft and tobe journaled in the associatedconnecting-rod as part of the crankin. p In said drawings, illustrating the best manner in which I hav contemplated applying the principles of'the invention, Fig. 1 is a perspective view of a crankpinsleeve which is constructed in accordance with these principles and applied to a crankshaft.

Fig. 2 is an axial section of the same.

In these views the numeral 3:denotes a Patented are e, 1922,

crankshaft of common form, having,-as in" tegral parts thereof, the crankpin 4t and the crank arms 5. The split tube, constituting,- I has externally the general form of an oblong the principal part ofmy improved sleeve,

rectangular block whose middl portion has been reduced to a cylindrical form. 'It 'is' split from end to end into two mutually reg istermg semitubular, or channeled, sections 6 and 7, meeting in an axial plane and normally fastened together with the bolts'8. These sections are internally fitted to the crankpin to which they are applied as shown, and are externally adapted as a jour-r nal 9 to turn in the terminal bearings, or

bearing box, of a connecting-rod not shown in the drawings- To prevent the sleeve from turning on the crankpin, withwhich it is preferably or approximately'coaxial, the inner sleeve section? is provided with the terminal slots 10, accommodating the v crank arms 5 respectively.

I claim as my inventiona v 1. A crankpin sleeve comprising a split tube, and means for holding the sections of the tube together and to the crankpin, said to engage the arms of the associated crankshaft nonrotatably. I

2. A crankpin sleeve comprising a split tube normally fastened together, terminally slotted to accommodate the crank, and rota tabl in a connecting-rod bearing.

3. A crankpin sleeve comprising a split tube having its sections normally bolted to-' tube being adapted to turn in a bearing and gether and rotatable in a bearing and having terminal slots adapted toreceive the arms of the crank respectively.

CHARLES C. BETTENHAUSEN. I p 

